Matrix Metalloproteinases in Reproductive Health

Matrix metalloproteinases (MMPs) constitute a family of zinc-dependent endopeptidases that orchestrate the degradation and remodelling of extracellular matrix (ECM) components. In reproductive physiology, tightly regulated MMP activity underpins key processes such as follicular rupture during ovulation, endometrial breakdown and regeneration in the menstrual cycle, and controlled invasion of trophoblast cells during implantation and placentation. Dysregulation of MMPs or their endogenous inhibitors (TIMPs) has been implicated in common reproductive disorders, including pre-eclampsia, recurrent miscarriage, endometriosis and infertility linked to impaired endometrial receptivity. For example, an imbalance between MMP-2 and MMP-9 and their TIMP partners can disrupt spiral artery remodelling, compromising placental blood flow and leading to hypertensive pregnancy complications. Conversely, aberrant overexpression of certain MMPs may exacerbate inflammatory damage in conditions such as endometriosis. Recent advances have also highlighted non-coding RNA networks and hormonal signalling pathways that modulate MMP expression, offering new insights into therapeutic targeting of proteolytic cascades in reproductive disease.

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Matrix Metalloproteinases in Reproductive Health publication trend

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Technical terms

Extracellular matrix (ECM): A complex network of proteins and glycoproteins that provides structural support and biochemical cues to surrounding cells.

Matrix metalloproteinases (MMPs): A family of zinc-dependent proteases that degrade ECM components to regulate tissue remodelling and cell migration.

Tissue inhibitors of metalloproteinases (TIMPs): Endogenous proteins that bind to MMPs and inhibit their proteolytic activity, ensuring controlled matrix remodelling.

Trophoblast invasion: The process by which specialised placental cells penetrate the maternal uterine lining to establish nutrient and gas exchange between mother and fetus.

References

1. Insights into the immunomodulatory regulation of matrix metalloproteinase at the maternal-fetal interface during early pregnancy and pregnancy-related diseases. Frontiers in Immunology (2023).
2. New Insights into the Role of Matrix Metalloproteinases in Preeclampsia. International Journal of Molecular Sciences (2017).
3. Matrix metalloproteinase 15 plays a pivotal role in human first trimester cytotrophoblast invasion and is not altered by maternal obesity. The FASEB Journal (2020).